CN212179815U - Bridge structure dynamic displacement monitoring and sensing system based on laser scanning - Google Patents
Bridge structure dynamic displacement monitoring and sensing system based on laser scanning Download PDFInfo
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- CN212179815U CN212179815U CN202021076809.XU CN202021076809U CN212179815U CN 212179815 U CN212179815 U CN 212179815U CN 202021076809 U CN202021076809 U CN 202021076809U CN 212179815 U CN212179815 U CN 212179815U
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Abstract
The utility model provides a bridge structures dynamic displacement monitoring sensing system based on laser scanning, includes laser emission source, laser receiving image device, signal processing controlling means, unable adjustment base and the structure that awaits measuring, the laser emission source is installed on unable adjustment base, unable adjustment base with the structure that awaits measuring sets up relatively, the structural installation of awaiting measuring laser receiving image device is used for detecting the dynamic displacement of the structure that awaits measuring, the laser emission source with laser receiving image device respectively with signal processing controlling means connects to the dynamic displacement signal transmission who will detect the structure that awaits measuring gives control module, and after control module received the signal, signal processing and the dynamic displacement of the structure that awaits measuring was shown. This utility model only needs to install sensing device on the structure, adopts laser sensing between monitoring end and the stiff end device, but the dynamic displacement of real-time supervision structure under various environmental conditions that awaits measuring has solved long-term online dynamic monitoring demand.
Description
[ technical field ]
The utility model relates to a relative dynamic displacement monitoring technology field between the civil engineering structure thing relates to a bridge structures dynamic displacement monitoring sensing system based on laser scanning particularly.
[ background art ]
Under the action of variable loads such as wind load, pedestrian load, vehicle load and the like, the civil engineering structure can generate macroscopic deformation, and the size and the trend of the deformation are the most direct and important parameters for evaluating the safety technical condition of the structure.
Along with the increase of current civil engineering structure operation age, the durability of structure can worsen the deformation along with time growth, and under some special operating mode effects, the structure still has overload phenomenon, leads to the structure to have great potential safety hazard, and the management unit pays more and more attention to the operation safety of structure, needs to monitor for a long time to the safety and technical condition.
The deformation condition of a test structure is a conventional means for evaluating the safety technical condition of the structure, but the traditional test means usually adopts a manual time-consuming and labor-consuming means such as a total station or a photoelectric deflectometer or a technology for testing accumulated static deformation such as a static level, and is not suitable for long-term real-time deformation monitoring.
[ summary of the invention ]
The utility model aims at not having the solution that realizes the long-term real-time supervision of bridge structures deformation yet on the existing market, and design one kind can be high-efficient convenient carry out the sensing device of bridge structures dynamic displacement monitoring, and its data processing transmission module who is equipped with specially can realize the data acquisition analysis and the wireless remote transmission of a plurality of sensors of multichannel, can realize to structure safety on-line monitoring system.
The utility model discloses the technical scheme who adopts as follows:
a bridge structure dynamic displacement monitoring and sensing system based on laser scanning comprises a laser emission source (1), a laser receiving and imaging device (2), a signal processing control device (3), a fixed base (4) and a structure to be detected (5), the laser emission source (1) is arranged on a fixed base (4), the fixed base (4) is arranged opposite to the structure to be measured (5), the structure to be measured (5) is provided with the laser receiving imaging device (2), used for detecting the dynamic displacement of the structure to be detected, the laser emission source (1) and the laser receiving imaging device (2) are respectively connected with the signal processing control device (3), and the dynamic displacement signal of the detected structure to be tested (5) is transmitted to the control module (3), and after the control module receives the signal, the signal is processed and the dynamic displacement of the structure to be tested (5) is displayed.
Further, the signal processing control device (3) comprises a processor (31), a display (32) and an analog-to-digital conversion interface (33), the analog-to-digital conversion interface (33) is connected with the processor (31), the processor (31) is connected with the display (32), and the analog-to-digital conversion interface (33) is respectively in communication connection with the laser emission source (1) and the laser receiving imaging device (2).
Further, the laser receiving imaging device (2) comprises a laser receiving part (21) which is of a cylindrical structure.
Further, the laser emission source comprises a shell (21) and a laser emitter (22) inside the shell (21), and laser emitted by the laser emitter is aligned with the circle center of the laser receiving part.
Furthermore, the offset monitoring acquisition precision of the laser emission source (1) and the laser receiving imaging device (2) is 0.1mm, the X axial range is +/-20 mm, the Y axial range is +/-25 mm, the monitoring distance is not more than 50m, the sampling frequency is 50Hz, and the working temperature is-25 ℃ to 60 ℃.
The utility model discloses only need to install laser receiving imaging device on the structure that awaits measuring, adopt laser non-contact sensing between laser emission source and the laser receiving imaging device, application modernization photoelectric acquisition handles and communication technology, but data automatic wireless transmission to distal end server, but the dynamic displacement of real-time supervision structure under various environmental condition has solved long-term online dynamic monitoring demand.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a side view of the structure of the present invention;
fig. 3 is a schematic view of the installation of the present invention;
FIG. 4 is a schematic structural diagram of the signal processing control device of the present invention
In the figure: 1. a laser emission source; 2. a laser receiving imaging device; 3. a signal processing control device; 4. a fixed base; 5. a structure to be tested; 11. a housing; 12. a laser transmitter; 21. a laser receiving section; 31. a processor; 32. a display; 33. and an analog-to-digital conversion interface.
[ detailed description of the invention ]
The present invention will be further described with reference to the accompanying drawings, and the specific embodiments described herein are only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Example 1
As shown in fig. 1-4, the embodiment of the present invention adopts the following technical solutions:
the utility model provides a bridge structures dynamic displacement monitoring sensing system based on laser scanning, includes laser emission source 1, laser receiving image device 2, signal processing controlling means 3, unable adjustment base 4 and awaits measuring structure 5, laser emission source 1 installs on unable adjustment base 4, unable adjustment base 4 with the structure 5 that awaits measuring sets up relatively, it installs to await measuring on the structure 5 laser receiving image device 2 for detect the dynamic displacement of the structure that awaits measuring, laser emission source 1 with laser receiving image device 2 respectively with signal processing controlling means 3 connects to the dynamic displacement signal transmission who will detect the structure 5 that awaits measuring gives control module 3, and control module receives after the signal, carries out signal processing and shows the dynamic displacement of the structure 5 that awaits measuring.
Further, as shown in fig. 4, the signal processing control device 3 includes a processor 31, a display 32, and an analog-to-digital conversion interface 33, where the analog-to-digital conversion interface 33 is connected to the processor 31, the processor 31 is connected to the display 32, and the analog-to-digital conversion interface 33 is respectively connected to the laser emission source 1 and the laser receiving imaging device 2 in a communication manner.
Further, the laser receiving imaging device 2 includes a laser receiving portion 21 having a cylindrical structure.
Further, the laser emission source comprises a shell 11 and a laser emitter 12 inside the shell 11, and laser emitted by the laser emitter is aligned with the center of the laser receiving part.
Furthermore, the offset monitoring acquisition precision of the laser emission source 1 and the laser receiving imaging device 2 is 0.1mm, the X axial range is +/-20 mm, the Y axial range is +/-25 mm, the monitoring distance is not more than 50m, the sampling frequency is 50Hz, and the working temperature is-25 ℃ to 60 ℃.
The utility model discloses a basic technical principle is, install the laser emission source at the stiff end through unable adjustment base and fix laser receiving imaging device on the bridge construction that needs the monitoring, catch the removal of the laser light spot of laser emission source transmission through laser receiving imaging device, reflect the change of relative displacement between the structure, the monitoring structure that awaits measuring is along with the deformation condition under the excitation of various load effects, communication module wireless transmission to the distal end server among the data passing signal processing controlling means of collection, can be equipped with special visual application software on the distal end server, form one set of long-term on-line monitoring system, monitoring structure operation safety.
Further, as shown in fig. 3, the practical case of the present invention applied to monitoring the dynamic displacement of the main beam of the bridge structure is described with reference to the accompanying drawings.
(1) Installing a sensing device: the laser emission source is installed at the top of a pier through the fixed base to serve as a fixed end, the laser receiving and imaging device is installed at the middle bottom surface of a girder span to serve as a monitoring end, and the signal processing control device can be installed under a bridge or on the bridge floor in an anchoring mode. During installation, it should be noted that the laser must be effectively centered with the receiver.
(2) And (3) circuit arrangement: the laser emission source and the laser receiving imaging device are connected with the data processing module through cables in a wired mode, and the cables can be installed on the outer side face of the bridge through wire grooves or a bridge frame.
(3) Data monitoring: the acquired data are wirelessly transmitted to a remote server through a processing module and are provided with special visual application software to form a set of long-term online monitoring system so as to monitor the dynamic displacement of the bridge span center position under the action of the dynamic load of the vehicle and evaluate the operation stress safety of the bridge.
In the measuring process, the laser receiving imaging device is fixed on a structure to be measured, the laser emitting source is installed on the fixed base, the laser emitting source emits laser, a light spot is received by a photosensitive surface on the laser imaging device, the signal processing control device continuously scans the output on the photosensitive surface, the output voltage of the light spot irradiating the center position is higher, and the relative position of the light spot center on the photosensitive surface is obtained after the light spot irradiating the center position is converted into an electric signal. And by taking the displacement as an initial position, when the structure to be measured has displacement change delta x, the laser imaging device synchronously changes, the position of the light spot center on the photosensitive surface also generates deviation delta x, and the dynamic displacement change of the structure to be measured can be obtained by continuous scanning.
In this embodiment, the utility model discloses can adopt multiunit laser emission source and laser to receive image device simultaneously and measure, each group laser emission source and laser structure image device's detection data can be uploaded simultaneously to among the signal processing controlling means, signal processing controlling means further will detect on data upload to the distal end server, no matter be on signal processing controlling means or on the server of distal end like this, all can carry out real-time dynamic monitoring to the overall structure of bridge. Meanwhile, the server end can be provided with special visual software for visually observing the overall structure of the bridge.
In this embodiment, the utility model discloses can utilize in bridge structures safety monitoring engineering, the engineering can be installed a plurality ofly according to the demand the utility model discloses, the on-the-spot simple installation to simultaneously with sensor data upload to the remote server in order to realize long-term whole long-range dynamic monitoring, form real-time dynamic displacement time course curve, truly reflected girder displacement variation circumstances under the bridge vehicle operation state, the data precision is high, and stability is good, can satisfy actual engineering demand.
Claims (6)
1. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning is characterized by comprising a laser emission source (1), a laser receiving imaging device (2), a signal processing control device (3), a fixed base (4) and a structure to be detected (5), wherein the laser emission source (1) is installed on the fixed base (4), the fixed base (4) and the structure to be detected (5) are arranged oppositely, the laser receiving imaging device (2) is installed on the structure to be detected (5) and is used for detecting the dynamic displacement of the structure to be detected, the laser emission source (1) and the laser receiving imaging device (2) are respectively connected with the signal processing control device (3), the dynamic displacement signal of the structure to be detected (5) is transmitted to the signal processing control device (3), and after the control module receives the signal, and processing the signals and displaying the dynamic displacement of the structure to be measured (5).
2. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning is characterized in that the signal processing control device (3) comprises a processor (31), a display (32) and an analog-to-digital conversion interface (33), the analog-to-digital conversion interface (33) is connected with the processor (31), the processor (31) is connected with the display (32), and the analog-to-digital conversion interface (33) is respectively in communication connection with the laser emission source (1) and the laser receiving imaging device (2).
3. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning as claimed in claim 2, further comprising a server, wherein the signal processing control device (3) further comprises a communication module (34), and the communication module (34) is in communication connection with the server.
4. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning of claim 1, characterized in that, the laser receiving and imaging device (2) comprises a laser receiving part (21), and the laser receiving part is a cylindrical structure.
5. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning is characterized in that the laser emission source comprises a shell (11) and a laser emitter (12) inside the shell (11), and laser emitted by the laser emitter is aligned with the center of the laser receiving part.
6. The bridge structure dynamic displacement monitoring and sensing system based on laser scanning as claimed in claim 1, wherein the collection precision of the monitoring offset of the laser emission source (1) and the laser receiving imaging device (2) is 0.1mm, the X axial range is ± 20mm, the Y axial range is ± 25mm, the monitoring distance is not more than 50m, the sampling frequency is 50Hz, and the working temperature is-25 ℃ to 60 ℃.
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| CN202021076809.XU CN212179815U (en) | 2020-06-12 | 2020-06-12 | Bridge structure dynamic displacement monitoring and sensing system based on laser scanning |
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| CN202021076809.XU CN212179815U (en) | 2020-06-12 | 2020-06-12 | Bridge structure dynamic displacement monitoring and sensing system based on laser scanning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082565A (en) * | 2021-12-06 | 2022-02-25 | 东风汽车股份有限公司 | Coating line reciprocating spraying system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082565A (en) * | 2021-12-06 | 2022-02-25 | 东风汽车股份有限公司 | Coating line reciprocating spraying system and control method thereof |
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